Isolation and characterization of hemolytic bacteria Fish disc and Neon Rainbow
DOI:
https://doi.org/10.5433/1679-0359.2012v33n2p763Keywords:
Symphysodon discus, Melanotaenia praecox, Antibiogram, Ornamental fish, Bacteriose, MIC.Abstract
The aim of this study was to isolate, identify and determine the ability of potential pathogenic bacteria hemolytic mite Disco (Symphysodon discus) and Neon Rainbow (Melanotaenia praecox), and define which of the antibiotic Trimethoprim, Florfenicol, Chloramphenicol, Norfloxacin, Erythromycin, Bacitracin, Enrofloxacin, Tetracycline, and Furazolidone Clindamycin has better inhibitory effect in vitro, and determine the minimum inhibitory concentration (MIC) for Chloramphenicol, Norfloxacin, Erythromycin and Enrofloxacin. In an outbreak of ornamental fish deaths were isolated nine strains of Gram negative, hemolytic where 3 were identified, two as Vibrio cholerae and one as Citrobacter braakii. With these strains were performed antibiogram and was determined the minimum inhibitory concentration at two different temperatures (22 and 30 ° C). Antibiotics Enrofloxacin, Norfloxacin, florfenicol, chloramphenicol and trimethoprim showed the best results in vitro inhibition against the Vibrio cholerae, and Citrobacter braakii. The MIC increased in 30 ° C for erythromycin and enrofloxacin against pathogens, while for Florfenicol and norfloxacin the MIC was not influenced by temperature.
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